STMC 高端电流检测芯片
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Application Circuit
STMC109 SOT23
109
DC Motor Control Programmable Current Source
Level Translating
Over Current Monitor SOT23 Package
SOT23 packages.
The STMC109is a
high side current sense monitor.STMC109
1
DESCRIPTION
Using this device eliminates the need to disrupt the ground plane when sensing a load current.
It takes a high side voltage developed across a current shunt resistor and translates it into a proportional output current.
A user defined output resistor scales the output current into a ground-referenced voltage.
The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications.A minimum operating current of just 4µA,combined with its SOT23package make it a unique solution,suitable for portable battery equipment.FEATURES •Low cost, accurate high-side current sensing.•Output voltage scaling.•Up to 2.5V sense voltage.• 2.5V – 20V supply range.•4µA quiescent current.•1% typical accuracy.•
APPLICATIONS •Battery Chargers •Smart Battery Packs •••Power Management ••
HIGH-SIDE CURRENT MONITOR
V To Load
R ORDERING INFORMATION
PART NUMBER
PACKAGE PARTMARKING
Top View
I out
Load
V in
3
2
1
CONNECTION DIAGRAMS ABSOLUTE MAXIMUM RATINGS
Voltage on any pin
-0.6V to 20V (relative to I out )Continuous output current 25mA
Continuous sense voltage V in + 0.5V > V sense †> V in – 5V Operating Temperature -40 to 85°C Storage Temperature
-55 to 125°C Package Power Dissipation (T A = 25°C)SOT23
450mW